Quartz

1.

(a kind of hard mineral occurring most often in a colorless transparent form) ក្វាត្ស៍ (សិលាម៉្យាងរឹង)

1.

A form of silica, or silicon dioxide (SiO2), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes also yellow, brown, purple, green, and of other colors; also in cryptocrystalline massive forms varying in color and degree of transparency, being sometimes opaque.